[coreboot-gerrit] Change in coreboot[master]: soc/intel: make uart_max_index's value reflect what its name pretends

[Michael Niewöhner (Code Review)]

Attention is currently required from:  Felix Singer, Nico Huber, Furquan Shaikh, Tim Wawrzynczak, Kyösti Mälkki, Karthik Ramasubramanian.
Michael Niewöhner has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49305 )

Change subject: soc/intel: make uart_max_index's value reflect what its name pretends
......................................................................

Patch Set 1:

This change is ready for review.